This family contains aspartate racemase, maleate isomerases EC:5.2.1.1 [1], glutamate racemase, hydantoin racemase and arylmalonate decarboxylase EC:4.1.1.76 [2].

1: A Covalent Succinylcysteine-like Intermediate in the Enzyme-Catalyzed Transformation of Maleate to Fumarate by Maleate Isomerase. Fisch F, Fleites CM, Delenne M, Baudendistel N, Hauer B, Turkenburg JP, Hart S, Bruce NC, Grogan G; J Am Chem Soc. 2010;132:11455-11457. PMID:20677745

2: Structure and mechanism of an unusual malonate decarboxylase and related racemases. Okrasa K, Levy C, Hauer B, Baudendistel N, Leys D, Micklefield J; Chemistry. 2008;14:6609-6613. PMID:18576402